參數(shù)資料
型號(hào): IR3088MTR
廠商: International Rectifier
英文描述: XPHASE PHASE IC WITH FAULT AND OVERTEMP DETECT
中文描述: XPHASE相集成電路及超溫故障檢測(cè)
文件頁(yè)數(shù): 24/34頁(yè)
文件大?。?/td> 688K
代理商: IR3088MTR
IR3088
Bootstrap Capacitor C
BST
Choose C
BST
=0.1uF
Decoupling Capacitors for Phase IC and Power Stage
Choose C
VCC
=0.1uF, C
VCCL
=0.1uF
VOLTAGE LOOP COMPENSATION
Type II compensation is used for the converter with AL-Polymer output capacitors. Choose the crossover frequency
fc=40kHz, which is 1/10 of the switching frequency per phase, and determine Rcp and C
CP
.
=
+
R
C
f
V
C
C
O
2
1
*
)
10
20
35
.
)
*
*
*
2
1
*
π
=
=
+
=
k
V
R
C
L
f
R
RAMP
2
FB
E
E
C
CP
0
)
10
*
7
*
10
*
560
*
10
*
40
*
8
365
)
10
10
560
(
)
10
220
(
)
10
40
2
)
2
2
3
6
3
3
6
9
2
3
2
π
π
π
nF
R
C
L
C
CP
E
E
CP
71
10
0
)
10
*
10
560
(
3
)
/
10
220
(
10
10
6
9
=
=
, Choose C
CP
=68nF
Choose C
CP1
=47pF to reduce high frequency noise.
CURRENT SHARE LOOP COMPENSATION
The crossover frequency of the current share loop f
CI
should be at least one decade lower than that of the voltage
loop f
C
. Choose the crossover frequency of current share loop f
CI
=4kHz
,
and calculate C
SCOMP
,
10
*
220
*
10
*
2
16
)
(
*
)
(
DAC
I
DAC
PWMRMP
I
V
V
V
V
V
*
2
1
*
*
*
*
*
65
.
LE
ROOM
CS
O
I
PWMRMP
SCOMP
f
V
π
3
3
2
1
)
10
*
47
.
*
34
*
105
*
12
*
10
*
2
16
*
65
.
nF
4
31
=
Choose C
SCOMP
=33nF.
011
.
)
35
.
12
(
*
)
35
.
8
12
(
8
*
10
*
400
*
*
*
*
3
12
3
=
=
=
PWMRMP
SW
PWMRMP
PWMRMP
R
MI
V
f
C
F
6
_
10
*
05
.
*
2
*
)]
(
*
*
CI
O
MI
O
O
E
CI
F
I
V
C
f
R
G
I
V
R
C
+
=
π
6
3
4
4
6
3
10
*
05
.
*
10
*
4
2
)
10
*
1
*
105
33
.
011
.
*
105
)
10
*
1
*
105
33
.
*
10
*
10
*
560
*
10
π
*
4
*
+
=
π
Page 24 of
34
9/30
/04
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